According to online retail giant Amazon's latest product listings, the company has sold out of its voice-activated Amazon Echo and Amazon Echo Dot speakers. Amazon had recently announced heavy discounts on both the speakers, to pose a challenge to the newly launched 'Google Home' product with similar functions.

Recent posts on social networks Twitter and Instagram have revealed that the first Australia and New Zealand customers who had ordered Apple's AirPods wireless headphones started receiving their devices a few hours back, on Monday morning in the two countries.

According to the posts, the AirPods are currently being delivered to the early buyers of the device across Australia and New Zealand. In addition, the Apple retail stores in Australia have also commenced the sales of the AirPods to customers.

In a blog post published on Thursday, electric vehicle manufacturer Tesla Motors said that it will be charging a global "idle" fee from vehicle owners who park their vehicles too long at a Supercharger. The company said that it would charge $0.40 per-minute from vehicle owners who keep their car parked at a Supercharger even after it has completed charging.

The move, Tesla said, is being undertaken by the company to ensure that its Supercharger network is not misused.

On Thursday, General Motors (GM) CEO Mary Barra said that the automaker will commence the testing of a fleet of autonomous vehicles on public roads in Michigan. The move will make GM the second conventional automaker - after Ford - to test fully autonomous vehicles on public roads outside its premises.

The autonomous vehicle fleet which GM will test on Michigan roads will be the company's Chevrolet Bolts.

On Wednesday, California's Department of Motor Vehicles (DMV) told Uber ride-hailing company to stop its self-driving car service for its passengers in San Francisco because it was illegal.

The order by the California DMV came close on the heels of Uber's earlier in the day announcement of the launch of its self-driving car service in San Francisco, making it the second US city - after Pittsburg - where Uber's self- driving car service could be availed by passengers.

In a Tuesday blog post, Google's John Krafcik - CEO of the company's Self-Driving Car Project - has revealed that the company's effort to develop and test a self-driving car has undergone an official change of lane --- from a research project to a business enterprise.

According to the blog post, Google's Self-Driving Car Project which was previously a research project has now become a business enterprise which will, at some point of time in the future, have to be a profit-spinning venture.